Water-based viscoelastic damping soundproof sealant

A technology of sound insulation, sealing and viscoelasticity, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of ineffective sound insulation, poor sound insulation, low bonding strength, etc. Sound insulation effect, damping effect of wide temperature range

CN102424714BActive Publication Date: 2013-10-30SHANGHAI HOOSUN INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-10-30

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Abstract

The invention discloses a water-based viscoelastic damping soundproof sealant which comprises the following components: 100 parts by mass of waterborne acrylic acid emulsion, 10-80 parts by mass of fillers, 2-18 parts by mass of plasticizers, 0.5-15 parts by mass of fire retardants, 0-1.5 parts by mass of bactericides, 0.1-5 parts by mass of dispersants, 0-2 parts by mass of surfactants, 0-3 parts by mass of antifoaming agents; the waterborne acrylic acid emulsion is an interpenetrating network polymer emulsion. The water-based viscoelastic damping soundproof sealant of the invention has the advantages of high damping capacity, wide damping temperature range, high bonding property, no solidification, no contraction, long-lasting viscoelasticity, and the like, can form a damping platform with a damping value of above 0.7 and a temperature range of up to above 75 DEG C, reaches a bonding strength of not less than 0.6 Mpa, can absorb sound vibrational energy which is converted into heat energy and is released, can be used for sealing and joint filling, and has excellent soundproof effect.
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Description

technical field

[0001] The invention relates to a sealant, in particular to a water-based viscoelastic damping and sound-insulating sealant. Background technique

[0002] With the improvement of people's living standards, sound insulation projects have gradually become a job that is highly valued by people, such as residences, cinemas, KTV, bars, recording studios, soundproof rooms, soundproof enclosures, soundproof windows, soundproof doors, etc. However, when people carry out sound insulation treatment, they ignore the importance of gap sound insulation and sealing.

[0003] Due to the diffraction phenomenon of sound waves, sound waves of certain frequencies will continue to propagate through the holes, making the sound insulation ability of the sound insulation component worse. Therefore, the gap is the natural enemy of sound insulation management, and it is a good channel for noise transmission. In order to obtain a good sound insulation effect, the gap on the sound ins...

Examples

Embodiment 1

[0021] Weigh each component raw material according to the following composition formula:

[0022]

[0023] The preparation process is as follows: first, add plasticizer, dispersant and flame retardant into the water-based acrylic emulsion, stir to make the mixture uniform, then uniformly add inorganic filler, and stir at high speed for 0.3 to 1.5 hours to obtain the product.

[0024] The water-based viscoelastic damping and sound-insulating sealant is in the form of a paste when it is not dry, and it is in a soft state after being surface-dried at room temperature for 1 hour.

[0025] The temperature range where the damping value of the water-based viscoelastic damping and sound-insulating sealant described in this embodiment is above 0.7 is -15 to 65°C as measured by the US ASTME756-83 vibration damping material testing system.

[0026] The bond strength of the water-based viscoelastic damping and sound-insulating sealant described in this embodiment was measured by a bond...

Embodiment 2

[0028] Weigh each component raw material according to the following composition formula:

[0029]

[0030]

[0031] The preparation process is as follows: First, add plasticizer, dispersant, flame retardant, bactericide, surfactant, and defoamer into the water-based acrylic emulsion, stir to mix evenly, then add inorganic filler evenly, and stir for 0.3 to 1.5 hours. Instantly.

[0032] The water-based viscoelastic damping and sound-insulating sealant is in the form of a paste when it is not dry, and it is in a soft state after being surface-dried at room temperature for 1 hour.

[0033] The temperature range where the damping value of the water-based viscoelastic damping and sound-insulating sealant described in this embodiment is above 0.7 is -17 to 78° C. as measured by the American ASTME756-83 vibration damping material testing system.

[0034] The bond strength of the water-based viscoelastic damping and sound-insulating sealant described in this embodiment was mea...

Embodiment 3

[0036] Weigh each component raw material according to the following composition formula:

[0037]

[0038] The preparation process is the same as described in Example 2.

[0039] The water-based viscoelastic damping and sound-insulating sealant is in the form of a paste when it is not dry, and it is in a soft state after being surface-dried at room temperature for 1 hour.

[0040] The temperature range where the damping value of the water-based viscoelastic damping sound-insulating sealant described in this embodiment is above 0.7 is -7 to 70° C. measured by the US ASTME756-83 vibration damping material testing system.

[0041] The bond strength of the water-based viscoelastic damping and sound-insulating sealant described in this embodiment was measured by a bond strength tester (tensile testing machine) to be 0.75 MPa.

[0042] The use method of the water-based viscoelastic damping and soundproof sealant of the present invention needs to be continuously filled inside the...